Thomas Lagkas

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—In today's wireless networks, there is a great need for quality of service (QoS), because of the time-bounded voice, audio, and video traffic. A new QoS enhanced standard is being standardized by the IEEE 802.11e workgroup. It uses a contention free access mechanism called hybrid control channel access (HCCA) to guarantee QoS. However, HCCA is not(More)
A QoS supportive Adaptive Polling (QAP) protocol for wireless LANs is introduced. QAP operates under an infrastructure wireless LAN, where an Access Point (AP) polls the wireless nodes in order to grant them permission to transmit. The polled node sends data directly to the destination node. We consider bursty traffic conditions, under which the protocol(More)
This study provides field research evidence on the efficiency of a " free-selection " peer review assignment protocol as compared to the typically implemented " assigned-pair " protocol. The study employed 54 sophomore students who were randomly assigned into three groups: Assigned-Pair (AP) (the teacher assigns student works for review to student pairs),(More)